What can you conclude based on the patterns you observe across all four maps?

Hai there! ^w^

Explanation:

What i can conclude is that where the tectonic plates are that's where a lot of earthquakes and volcanoes erupt.

Here's sum reasons why they happen.

Volcanoes: When a part of the earth's upper mantle or lower crust melts, magma forms. ... Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber.

Earthquakes: An earthquake is caused by a sudden slip on a fault. ... When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.

Hope this helped!

Credit sourced from "scientificamerican.com, and usgs.gov"

it will show up when more than one person gives an answer